Observation of spin-wave dark soliton pairs in yttrium iron garnet thin films

Article

关键词: NONLINEAR SCHRODINGER-EQUATION;    SPATIAL SOLITONS;    ENVELOPE SOLITONS;    OPTICAL-FIBERS;    Y-JUNCTIONS;    PROPAGATION;    GUIDES;    MEDIA;    PHASE;   

DOI  :  10.1103/PhysRevB.91.174418

来源: SCIE

【 摘 要 】

The formation of a pair of dark solitons from a single nonlinear black spin-wave pulse was observed. The experiments were carried out with a long and narrow magnetic yttrium iron garnet film strip in a surface spin-wave configuration. The black spin-wave pulses were excited by the use of microwave black pulses-large-amplitude microwaves with narrow squarelike dips. Pairs of black solitons were observed in certain input power and input black pulse width ranges. For each pair, the two solitons show opposite pi phase jumps and an overall phase change of zero. Beyond those power and width ranges, one also observed pairs of gray solitons that showed opposite phase jumps and a zero total phase change. The formation of a single black soliton was also observed, but only for an input black pulse that was very narrow. The experimental observations were reproduced by numerical simulations based on the complex Ginzburg-Landau equation.

【 授权许可】

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